Effects of Videolaryngoscope on Intraocular Pressure

Phase 4

Completed

• Conditions: Intubation Complication
• Interventions: Device: Mcgrath; Device: Macintosh

• Registration Number: NCT02474394
• Lead Sponsor: Tokat Gaziosmanpasa University

Brief Summary

This study is designed to compare the effects of the McGrath Series 5 video laryngoscope and Macintosh laryngoscope on intraocular pressure during laryngoscopy.

Detailed Description

The stability of the intraocular pressure plays an important role during ophthalmic surgery. The systemic blood pressure, aqueous humor dynamics, choroidal blood volume, central venous pressure, extra-ocular muscle tone, and also conventional laryngoscopy affect the intraocular pressure.It was shown that the new devices for laryngoscopy, such as video laryngoscopes provide minimal hemodynamic changes when compared to direct laryngoscopes. However there is no current data about the effects of the intubation with McGrath videolaryngoscope on intraocular pressure. The main objective of this study to compare the effects of the McGrath Series 5 video laryngoscope and Macintosh laryngoscope on intraocular pressure during laryngoscopy.

Study Timeline

• Study Start: 2013-02
• Status Verified: 2015-06
• Primary Completion: 2015-06
• Study Completion: 2015-06
• Study First Submitted: 2015-06-15
• Study First Submitted QC: 2015-06-16
• Study First Posted: 2015-06-17
• Last Update Submitted: 2015-06-25
• Last Update Posted: 2015-06-26

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 80

Inclusion Criteria

• American society of anesthesiologist physical status I
• Non-ophthalmic elective surgery under general anesthesia

Exclusion Criteria

• A history of pre-existing glaucoma or previous intraocular surgery
• Thyromental distance below 6cm
• Maximum mouth opening below 3cm
• Mallampati score of III or IV
• Pre-anesthetic intraocular pressure above 20 mmHg
• Number of intubation attempts more than 2
• Obstetric or laparoscopic surgery

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Mcgrath	Mcgrath	The endotracheal intubation will be provided using Mcgrath series 5 video laryngoscope
Macintosh	Macintosh	The endotracheal incubation will be provided using macintosh laryngoscope

Primary Outcome Measures

Name	Time	Method
Intraocular pressure	during laryngoscopy	The intraocular pressure measurement will be performed using a Tono-Pen XL tonometer (Reichert Inc., USA) by an ophthalmologist who is blind to the intubation device used.

Trial Locations

Locations (1)

Gaziosmanpasa University Medical School; 🇹🇷 Tokat, Turkey